CN102682732A - Signal compensation method, switching circuit and liquid crystal display device in liquid crystal panel - Google Patents
Signal compensation method, switching circuit and liquid crystal display device in liquid crystal panel Download PDFInfo
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- CN102682732A CN102682732A CN2012101830689A CN201210183068A CN102682732A CN 102682732 A CN102682732 A CN 102682732A CN 2012101830689 A CN2012101830689 A CN 2012101830689A CN 201210183068 A CN201210183068 A CN 201210183068A CN 102682732 A CN102682732 A CN 102682732A
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
- G09G3/3611—Control of matrices with row and column drivers
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2310/00—Command of the display device
- G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
- G09G2310/0232—Special driving of display border areas
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0233—Improving the luminance or brightness uniformity across the screen
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/10—Special adaptations of display systems for operation with variable images
- G09G2320/103—Detection of image changes, e.g. determination of an index representative of the image change
Abstract
The invention discloses a signal compensation method in a liquid crystal panel visible range. The method comprises steps of inputting display driving signals corresponding to all pixels of visible ranges; performing signal compensation for display driving signals of all pixels of fringe areas of corresponding visible ranges, or performing signal compensation for display driving signals of all pixels of areas which are outside fringe areas of corresponding visible ranges; and outputting compensated and uncompensated display driving signals corresponding to all pixels to corresponding pixels. The invention also discloses an input data switching circuit and a liquid crystal display device in the liquid crystal panel. By the aids of the above method, the whole optical uniformity of the liquid crystal panel visible range is improved.
Description
Technical field
The present invention relates to technical field of liquid crystal display, particularly relate to the method for signal compensation in a kind of liquid crystal panel visible area, input data converting circuit and liquid crystal indicator in the liquid crystal panel.
Background technology
Liquid crystal indicator generally includes liquid crystal panel, liquid crystal panel comprise array base palte, color membrane substrates again and be arranged at array base palte and color membrane substrates between liquid crystal layer.Liquid crystal indicator comprises a plurality of pixel cells that form visible area; Each pixel cell includes and is arranged at the pixel electrode on the array base palte and is arranged at the public electrode on the color membrane substrates, and the public electrode on this pixel electrode and the color membrane substrates constitutes liquid crystal capacitance.Liquid crystal indicator also comprises control circuit, data-driven integrated circuit (IC) and the turntable driving IC that pixel electrode is controlled usually.
As shown in Figure 1; Liquid crystal panel comprises viewing area and frame glue dispensing area 101; The viewing area comprises visual a-quadrant 102 and visual B zone 103; In the processing procedure (being LCD cell) of the various material assemblings of liquid crystal indicator, need to make array base palte and color membrane substrates pressurization driving fit at the peripheral coating one circle frame glue 101 of liquid crystal panel visible area.Because process conditions control is not easy; Many factor affecting the clearance evenness degree after array base palte and the color membrane substrates pressurization driving fit; Thereby influenced the inhomogeneity performance of the whole optics of liquid crystal panel; Tend to like this to make that finished product can show in the gap near frame glue place visible area compared to bigger than normal away from the gap of frame glue place visible area, cause visual a-quadrant, frame glue place 102 optics penetrances higher, on the low side away from the visual B zone 103 of frame glue.Can find that from the observation of outward appearance image quality visual a-quadrant 102 has influenced the inhomogeneity performance of the whole optics of liquid crystal panel with respect to visual B zone 103 inclined to one side Huangs bright partially (Mura).
Summary of the invention
The technical matters that the present invention mainly solves provides the method for signal compensation in a kind of liquid crystal panel visible area, input data converting circuit and liquid crystal indicator in the liquid crystal panel, can improve the whole optics uniformity coefficient of liquid crystal panel visible area.
For solving the problems of the technologies described above, the technical scheme that the present invention adopts is: the method for signal compensation in a kind of liquid crystal panel visible area is provided, comprises: the display drive signals of importing corresponding each pixel of liquid crystal panel visible area; For the display drive signals of each pixel of the said liquid crystal panel visible area of correspondence fringe region carries out signal compensation; The display drive signals that perhaps is each pixel in the zone outside the corresponding said liquid crystal panel visible area edge carries out signal compensation, so that realize consistent between the image quality in the image quality of liquid crystal panel visible area fringe region and the zone outside the edge; Export said display drive signals through compensation and each pixel of correspondence of not compensated to respective pixel.
Wherein, The display drive signals of said each pixel for corresponding liquid crystal panel visible area fringe region carries out signal compensation; Perhaps carry out comprising before the step of signal compensation: according to the image quality distribution situation of said liquid crystal panel visible area for the display drive signals of each pixel in the zone outside the corresponding said liquid crystal panel visible area edge; Confirm coboundary row n that the zone outside said liquid crystal panel visible area fringe region and the edge demarcates and the value of the capable m of lower boundary between the two; Confirm left margin row p that the zone outside said liquid crystal panel visible area fringe region and the edge demarcates and the value of right margin row q between the two, wherein, n, m, p and q all are natural numbers; And n is less than m, and p is less than q; Judgement need to display drive signals carry out signal compensation its place of pixel capable i with row j belong to said fringe region or belong to the zone outside the edge, wherein, i and j all are natural numbers; If said i is greater than said coboundary row n and less than the capable m of said lower boundary; And said j is greater than left margin row p and less than right margin row q; Then saidly need belong to the zone outside the said liquid crystal panel visible area edge to the pixel that display drive signals carries out signal compensation; Otherwise; Said need to display drive signals carry out signal compensation pixel belong to said liquid crystal panel visible area fringe region, constantly circulate according to the step of said judgement, confirm that successively each pixel belongs to said fringe region or belongs to the zone outside the edge in the said liquid crystal panel visible area.
For solving the problems of the technologies described above, another technical scheme that the present invention adopts is: the data converting circuit of the input in a kind of liquid crystal panel is provided, and said circuit comprises: load module is used to import the display drive signals of corresponding each pixel of liquid crystal panel visible area; The signal compensation module; The display drive signals that is used to each pixel of corresponding said liquid crystal panel visible area fringe region carries out signal compensation; The display drive signals that perhaps is each pixel in the zone outside the corresponding said liquid crystal panel visible area edge carries out signal compensation, so that realize consistent between the image quality in the image quality of liquid crystal panel visible area fringe region and the zone outside the edge; Output module, the display drive signals that is used for exporting said each pixel of correspondence through compensation and not compensated is to respective pixel.
Wherein, Said input data converting circuit also comprises judge module, and said judge module comprises: confirm the unit, be used for the image quality distribution situation according to said liquid crystal panel visible area; Confirm coboundary row n that the zone outside said liquid crystal panel visible area fringe region and the edge demarcates and the value of the capable m of lower boundary between the two; Confirm left margin row p that the zone outside said liquid crystal panel visible area fringe region and the edge demarcates and the value of right margin row q between the two, wherein, n, m, p and q all are natural numbers; And n is less than m, and p is less than q; Judging unit is used to judge and need the capable i that display drive signals carries out its place of pixel of signal compensation be belonged to said fringe region or belong to the zone outside the edge with row j that wherein, i and j all are natural numbers; Division unit; Be used at said i greater than said coboundary row n and less than the capable m of said lower boundary; And said j is during greater than left margin row p and less than right margin row q, then said need to display drive signals carry out signal compensation pixel belong to the zone outside the said liquid crystal panel visible area edge, otherwise; Said need to display drive signals carry out signal compensation pixel belong to said liquid crystal panel visible area fringe region; Return judging unit, confirm that successively each pixel belongs to said fringe region or belongs to the zone outside the edge in the said liquid crystal panel visible area, and export results to the signal compensation module.
For solving the problems of the technologies described above; Another technical scheme that the present invention adopts is: a kind of liquid crystal indicator is provided; Said device comprises: input data converting circuit, data drive control circuit, output data formating circuit, liquid crystal polarity control circuit, turntable driving control circuit and synchronizing circuit; Said synchronizing circuit is electrically connected to data drive control circuit and liquid crystal polarity control circuit, and said data drive control circuit is electrically connected to the output data formating circuit; Said input data converting circuit comprises: load module is used to import the display drive signals of corresponding each pixel of liquid crystal panel visible area; The signal compensation module; The display drive signals that is used to each pixel of corresponding said liquid crystal panel visible area fringe region carries out signal compensation; The display drive signals that perhaps is each pixel in the zone outside the corresponding said liquid crystal panel visible area edge carries out signal compensation, so that realize consistent between the image quality in the image quality of liquid crystal panel visible area fringe region and the zone outside the edge; Output module is used to export display drive signals to the data drive control circuit and the liquid crystal polarity control circuit of said each pixel of correspondence through compensation and not compensated.
Wherein, Said input data converting circuit also comprises judge module, and said judge module comprises: confirm the unit, be used for the image quality distribution situation according to said liquid crystal panel visible area; Confirm coboundary row n that the zone outside said liquid crystal panel visible area fringe region and the edge demarcates and the value of the capable m of lower boundary between the two; Confirm left margin row p that the zone outside said liquid crystal panel visible area fringe region and the edge demarcates and the value of right margin row q between the two, wherein, n, m, p and q all are natural numbers; And n is less than m, and p is less than q; Judging unit is used for judging that the pairing liquid crystal panel visible area of the display drive signals i that pixel is expert at of said load module input and row j belong to said fringe region or belong to the zone outside the edge, and wherein, i and j all are natural numbers; Division unit; Be used for capable i in said pixel greater than said coboundary row n and less than the capable m of said lower boundary; And the row j of said pixel is during greater than left margin row p and less than right margin row q, and the pixel of the capable j row of then said i belongs to the zone outside the said liquid crystal panel visible area edge, otherwise; The pixel of the capable j row of said i belongs to said liquid crystal panel visible area fringe region; Return judging unit, confirm that successively each pixel belongs to said fringe region or belongs to the zone outside the edge in the said liquid crystal panel visible area, and export results to the signal compensation module.
The invention has the beneficial effects as follows: the situation that is different from prior art; The present invention is before output display drive signals to respective pixel; Display drive signals to each pixel in the zone outside visible area fringe region or the visible area edge carries out signal compensation; The display drive signals of each pixel of correspondence of compensation of output warp and not compensated is to respective pixel then; Because signal compensation has been carried out in the uneven zone of optics in the visible area, can improve the whole optics uniformity coefficient of liquid crystal panel visible area, reach the purpose of the image quality improving uniformity of liquid crystal panel.
Description of drawings
Fig. 1 is the regional differences in appearance synoptic diagram outside visible area fringe region and the edge in the prior art;
Fig. 2 is the process flow diagram of method first embodiment of signal compensation in the liquid crystal panel visible area of the present invention;
Fig. 3 is the process flow diagram of method second embodiment of signal compensation in the liquid crystal panel visible area of the present invention;
Fig. 4 is the process flow diagram of method the 3rd embodiment of signal compensation in the liquid crystal panel visible area of the present invention;
Fig. 5 is the process flow diagram of method the 4th embodiment of signal compensation in the liquid crystal panel visible area of the present invention;
Fig. 6 is the process flow diagram of method the 5th embodiment of signal compensation in the liquid crystal panel visible area of the present invention;
Fig. 7 is the process flow diagram of method the 6th embodiment of signal compensation in the liquid crystal panel visible area of the present invention;
Fig. 8 is that the method one concrete visible area of using of signal compensation in the liquid crystal panel visible area of the present invention is divided synoptic diagram;
Fig. 9 is the structural representation of first embodiment of the input data converting circuit in the liquid crystal panel of the present invention;
Figure 10 is the structural representation of second embodiment of the input data converting circuit in the liquid crystal panel of the present invention;
Figure 11 is the structural representation of an embodiment of liquid crystal indicator of the present invention.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is elaborated.
Consult Fig. 2, Fig. 2 is the process flow diagram of method first embodiment of signal compensation in the liquid crystal panel visible area of the present invention, and this method comprises:
Step S201: the display drive signals of importing corresponding each pixel of liquid crystal panel visible area;
For each point on the general colored liquid crystal panel that shows; I.e. pixel; It all is to be made up of red, green, blue (RGB) three subpixels at least, and the display drive signals of corresponding each pixel of liquid crystal panel visible area of input in this step is such as the GTG signal of each pixel RGB.
Step S202: for the display drive signals of each pixel of the said liquid crystal panel visible area of correspondence fringe region carries out signal compensation; The display drive signals that perhaps is each pixel in the zone outside the corresponding said liquid crystal panel visible area edge carries out signal compensation, so that realize consistent between the image quality in the image quality of liquid crystal panel visible area fringe region and the zone outside the edge;
Outward appearance performance according to the optics homogeneity; The liquid crystal panel visible area is divided into the zone outside visible area fringe region and the visible area edge; For making the image quality of liquid crystal panel visible area fringe region and the image quality basically identical in the zone outside the edge, can adopt one of following dual mode at least:
A, the display drive signals of each pixel of liquid crystal panel visible area fringe region is carried out signal compensation, make the image quality of liquid crystal panel visible area fringe region and the image quality basically identical in the zone outside the edge; Perhaps
B, the display drive signals of each pixel in the zone outside the liquid crystal panel visible area edge is carried out signal compensation, make the image quality of liquid crystal panel visible area fringe region and the image quality basically identical in the zone outside the edge.
This dual mode all can reach the whole image quality of liquid crystal panel visible area and on outward appearance is observed, realize consistent.
Step S203: export said display drive signals through compensation and each pixel of correspondence of not compensated to respective pixel.
Display drive signals to each pixel of liquid crystal panel visible area fringe region carries out signal compensation, output be the display drive signals of each pixel in the zone outside the visible area edge of the display drive signals of each pixel of the visible area fringe region of compensation and not compensated; Display drive signals to each pixel in the zone outside the liquid crystal panel visible area edge carries out signal compensation, output be the display drive signals of each pixel of visible area fringe region of display drive signals and not compensated of each pixel in the zone outside the visible area edge of compensation.
More than can understand; The present invention is before output display drive signals to respective pixel; Display drive signals to each pixel in the zone outside visible area fringe region or the visible area edge carries out signal compensation; The display drive signals of each pixel of correspondence of compensation of output warp and not compensated is to respective pixel then; Because signal compensation has been carried out in the uneven zone of optics in the visible area, can improve the whole optics uniformity coefficient of liquid crystal panel visible area, reach the purpose of the image quality improving uniformity of liquid crystal panel.
Consult Fig. 3, Fig. 3 is the process flow diagram of method second embodiment of signal compensation in the liquid crystal panel visible area of the present invention, and present embodiment and aforementioned first embodiment are basic identical, and difference is: comprise before the step S202:
Step S301: according to the image quality distribution situation of said liquid crystal panel visible area; Confirm coboundary row n that the zone outside said liquid crystal panel visible area fringe region and the edge demarcates and the value of the capable m of lower boundary between the two; Confirm left margin row p that the zone outside said liquid crystal panel visible area fringe region and the edge demarcates and the value of right margin row q between the two, wherein, n, m, p and q all are natural numbers; And n is less than m, and p is less than q;
Can confirm the value of coboundary row n, the capable m of lower boundary, left margin row p and the right margin row q of the area limit outside liquid crystal panel visible area fringe region and the edge eaily through circuit; Can confirm thus which zone is each pixel of arbitrary capable i and arbitrary row j be positioned in the liquid crystal panel visible area, so that confirm which kind of operation is this pixel carried out.For example; In one embodiment; The value of confirming coboundary row n, the capable m of lower boundary, left margin row p and the right margin row q of the area limit outside liquid crystal panel visible area fringe region and the edge is 5,103,5 and 212, and promptly go in the coboundary the 5th of these two area limits, lower boundary the 103rd row; Left margin the 5th row, right margin the 212nd row.
Step S302: judgement need to display drive signals carry out signal compensation its place of pixel capable i with row j belong to said fringe region or belong to the zone outside the edge, wherein, i and j all are natural numbers;
Step S303: if said i is greater than said coboundary row n and less than the capable m of said lower boundary; And said j is greater than left margin row p and less than right margin row q; Then saidly need belong to the zone outside the said liquid crystal panel visible area edge to the pixel that display drive signals carries out signal compensation; Otherwise; Said need to display drive signals carry out signal compensation pixel belong to said liquid crystal panel visible area fringe region, constantly circulate according to the step of said judgement, confirm that successively each pixel belongs to said fringe region or belongs to the zone outside the edge in the said liquid crystal panel visible area.
According to above-mentioned example; Promptly go in the coboundary the 5th of these two area limits, lower boundary the 103rd row, left margin the 5th row; Right margin the 212nd row; The capable i that if desired display drive signals is carried out the pixel place of signal compensation is respectively 6 and 100 with row j, and promptly this pixel is listed as at the 6th row the 100th, and the result who judges according to step S303 is: this pixel belongs to the zone outside the visible area edge; Another pixel that need carry out signal compensation to display drive signals is at the 4th row the 227th row, and the result who judges according to step S303 is: this pixel belongs to the visible area fringe region.
Consult Fig. 4 and Fig. 5; Fig. 4 and Fig. 5 are method the 3rd embodiment of signal compensation in the liquid crystal panel visible area of the present invention and the process flow diagram of the 4th embodiment; These two embodiment and aforementioned first embodiment are basic identical, are the process flow diagrams of the first embodiment embodiment, to two schemes should be arranged.Wherein, the visual a-quadrant 102 in the a-quadrant corresponding diagram 1, i.e. visible area fringe region, the visual B zone 103 in the corresponding diagram 1 of B zone, i.e. zone outside the visible area edge.
Scheme one:
Step S401: import the original RGB GTG signal of corresponding each pixel of visible area, i.e. display drive signals;
Step S402: the RGB GTG signal to a-quadrant pixel in the corresponding visible area in the display drive signals of being imported compensates;
Step S403: the RGB GTG signal of the a-quadrant pixel of output after over-compensation;
Step S404: output is without the RGB GTG signal of the B area pixel of over-compensation;
Scheme two: compare with scheme one, difference is when compensating signal, to carry out opposite operation, and step S501 is identical with step S401;
Step S502: the RGB GTG signal to B area pixel in the corresponding visible area in the display drive signals of being imported compensates;
Step S503: the RGB GTG signal of the B area pixel of output after over-compensation;
Step S504: output is without the RGB GTG signal of the a-quadrant pixel of over-compensation;
Two steps of above-mentioned steps S402 and step S502 are the content of step S202, and step S403, step S404, step S503 and four steps of step S504 are the content of step S203.
Consult Fig. 6 and Fig. 7, Fig. 6 and Fig. 7 are respectively method the 5th embodiment of signal compensation in the liquid crystal panel visible area of the present invention and the process flow diagram of the 6th embodiment.Wherein, the visual a-quadrant 102 in the a-quadrant corresponding diagram 1, i.e. visible area fringe region, the visual B zone 103 in the corresponding diagram 1 of B zone, i.e. zone outside the visible area edge.Scheme two correspondences of Fig. 6 and Fig. 5, scheme one correspondence of Fig. 7 and Fig. 4.This method may further comprise the steps:
Step S601: the RGB GTG signal of corresponding certain pixel, i.e. display drive signals in the input visible area;
Step S602: the capable i and row j that confirm this pixel place;
Step S603: whether the capable i that judges this pixel is greater than n and less than m, if entering step S604 if not, gets into step S606;
Step S604: whether the row j that judges this pixel is greater than p and less than q, if entering step S605 if not, gets into step S606;
If the capable i of this pixel is greater than n and less than m, row j shows that greater than p and less than q this pixel is the zone outside the visible area edge, promptly visual B zone, otherwise this pixel is the visible area fringe region, promptly visual a-quadrant.
Step S605: the RGB GTG signal to the B area pixel compensates;
Step S606: output is without the RGB GTG signal of the a-quadrant pixel of over-compensation or the RGB GTG signal of the B area pixel of output after over-compensation.
If this pixel is visual B zone, then export the RGB GTG signal of this pixel after over-compensation, if this pixel is visual a-quadrant, then export RGB GTG signal without this pixel of over-compensation.
The difference of Fig. 7 and Fig. 6 is: Fig. 7 carries out RGB GTG signal compensation to the pixel of a-quadrant, and wherein step S701, step S702 and step S601, step S602 are identical respectively, and different step is specific as follows:
Step S703: whether the capable i that judges this pixel satisfies less than n or greater than m, if, get into step S705, if not, get into step S704;
Step S704: whether the row j that judges this pixel satisfies less than p or greater than q, if, get into step S705, if not, get into step S706;
Step S703 and step S704 are used for confirming that this pixel is visual a-quadrant or visual B zone; If this pixel is visual a-quadrant; RGB GTG signal to this pixel compensates, if this pixel is visual B zone, the RGB GTG signal to this pixel does not compensate.
Step S705: the RGB GTG signal to the a-quadrant pixel compensates;
Step S706: output is without the RGB GTG signal of the B area pixel of over-compensation or the RGB GTG signal of the a-quadrant pixel of output after over-compensation.
If this pixel is visual a-quadrant, the RGB GTG signal of this pixel of output after over-compensation, if this pixel is visual B zone, output is without the RGB GTG signal of this pixel of over-compensation.
In a word; Because signal compensation has been carried out in the uneven zone of optics in the visible area; Make in the observation of viewing outside as quality, improved the optical homogeneity between the zone outside visible area fringe region and the visible area edge, reach the purpose of the image quality improving uniformity of liquid crystal panel.
Consult Fig. 8, Fig. 8 is that the concrete visible area of using of the method one of signal compensation in the liquid crystal panel visible area of the present invention is divided synoptic diagram, is that example describes with one of them upper left corner in four corners of liquid crystal panel.I and j are respectively the numberings of the row and column of certain pixel.
Image quality distribution situation according to said liquid crystal panel visible area; Confirm the value of the coboundary row n that the zone outside said liquid crystal panel visible area fringe region and the edge demarcates between the two, confirm the value of the left margin row p that the zone outside said liquid crystal panel visible area fringe region and the edge demarcates between the two.
Under the situation of predetermined demonstration uniform luminance image, the visible area intrinsic brilliance visible according to the user is divided into four zones 801,802,803 and 804 with the visible area fringe region more than the row n of coboundary, upper left corner, i.e. [1, a], [a+1; A+b], [a+b+1, a+b+c] and [a+b+c+1, a+b+c+d], upper left corner left margin row p is divided into four zones 801,802,803 and 804 with the visible area fringe region on a left side; I.e. [1, r], [r+1, r+s], [r+s+1; R+s+t] and [r+s+t+1, r+s+t+u], wherein; A, b, c, d, r, s, t and u are natural number, and a+b+c+d+1=n, r+s+t+u+1=p.Number of regions differs and is decided to be four, can make characteristic according to liquid crystal panel and be divided into a plurality of zones according to brightness, does not limit at this.
Four zones 801,802,803 of above-mentioned visible area fringe region and 804 and the edge outside five zones altogether, zone 805, under the predetermined situation that shows the uniform luminance image, the visible visible area intrinsic brilliance of user is different.The predetermined situation that shows the uniform luminance image; Shows signal G1, G2, G3, G4 and the G5 that also promptly offers five zones is identical gray scale voltage signal; Be G1=G2=G3=G4=G5; Corresponding intrinsic brilliance is respectively L1, L2, L3, L4, L5, but intrinsic brilliance there are differences, and difference possibly be that gradient type changes: L1>L2>L3>L4>L5 or L1 < L2 < L3 < L4 < L5.In order to compensate these difference, can give signal compensation through two schemes of Fig. 6 and Fig. 7: (i=[1, a] is listed as j=[1 at once in zone 1; R]) shows signal G1 compensation G1 ', zone 2 802 (i=[a+1, a+b] at once, row j=[r+1; R+s]) shows signal G2 compensation G2 ', zone 3 803 (i=[a+b+1, a+b+c] at once; Row j=[r+s+1, r+s+t]) shows signal G3 compensation G3 ', zone 4 804 (i=[a+b+c+1 at once; A+b+c+d], row j=[r+s+t+1, r+s+t+u]) shows signal G4 compensation G4 '; Zone 5 805 (be the zone outside the edge, i>a+b+c+d, the shows signal G5 compensation G5 ' of row j＞r+s+t+u); Make G1 ' < G2 ' < G3 ' < G4 ' < G5 ' or G1 '>G2 '>G3 '>G4 '>G5 ', and make that the intrinsic brilliance in five zones is the same basically, i.e. L1 '=L2 '=L3 '=L4 '=L5 '.
By the way, can make the uniformity coefficient of whole liquid crystal panel get a promotion, and reduce the degree of difficulty that the engineering processing procedure is made.
Consult Fig. 9, Fig. 9 is the structural representation of first embodiment of the input data converting circuit in the liquid crystal panel of the present invention, and this input data converting circuit comprises: load module 901, signal compensation module 902 and output module 903.
The display drive signals that signal compensation module 902 is used to each pixel of corresponding said liquid crystal panel visible area fringe region carries out signal compensation; The display drive signals that perhaps is each pixel in the zone outside the corresponding said liquid crystal panel visible area edge carries out signal compensation, so that realize consistent between the image quality in the image quality of liquid crystal panel visible area fringe region and the zone outside the edge;
Consult Figure 10; Figure 10 is the structural representation of second embodiment of the input data converting circuit in a kind of liquid crystal panel of the present invention; Present embodiment and foregoing circuit first embodiment are basic identical; Difference is: this input data converting circuit also comprises judge module, and this judge module comprises: confirm unit 1001, judging unit 1002 and division unit 1003.
Confirm that unit 1001 is used for the image quality distribution situation according to said liquid crystal panel visible area; Confirm coboundary row n that the zone outside said liquid crystal panel visible area fringe region and the edge demarcates and the value of the capable m of lower boundary between the two; Confirm left margin row p that the zone outside said liquid crystal panel visible area fringe region and the edge demarcates and the value of right margin row q between the two, wherein, n, m, p and q all are natural numbers; And n is less than m, and p is less than q;
Judging unit 1002 is used to judge and need the capable i that display drive signals carries out its place of pixel of signal compensation be belonged to said fringe region or belong to the zone outside the edge with row j that wherein, i and j all are natural numbers;
The present invention is before the output display drive signals; Display drive signals to each pixel in the zone outside visible area fringe region or the visible area edge carries out signal compensation; The display drive signals of each pixel of correspondence of compensation of output warp and not compensated is to respective pixel then; Because signal compensation has been carried out in the uneven zone of optics in the visible area, can improve the whole optics uniformity coefficient of liquid crystal panel visible area, reach the purpose of the image quality improving uniformity of liquid crystal panel.
The present invention also provides a kind of liquid crystal indicator embodiment; Like Figure 11, this liquid crystal indicator comprises: input data converting circuit 1101, data drive control circuit 1102, output data formating circuit 1103, liquid crystal polarity control circuit 1104, turntable driving control circuit 1105 and synchronizing circuit 1106.
This synchronizing circuit 1106 is electrically connected to data drive control circuit 1102 and liquid crystal polarity control circuit 1104, and said data drive control circuit 1102 is electrically connected to output data formating circuit 1103.
Input data converting circuit 1101 comprises: load module, signal compensation module and output module.
Load module is used to import the display drive signals of corresponding each pixel of liquid crystal panel visible area;
The display drive signals that the signal compensation module is used to each pixel of corresponding said liquid crystal panel visible area fringe region carries out signal compensation; The display drive signals that perhaps is each pixel in the zone outside the corresponding said liquid crystal panel visible area edge carries out signal compensation, so that realize consistent between the image quality in the image quality of liquid crystal panel visible area fringe region and the zone outside the edge;
Output module is used to export display drive signals to the data drive control circuit 1102 and liquid crystal polarity control circuit 1104 of said each pixel of correspondence through compensation and not compensated.
In addition, input data converting circuit 1101 also comprises judge module, and this judge module comprises:
Confirm the unit; Be used for image quality distribution situation, confirm coboundary row n that the zone outside said liquid crystal panel visible area fringe region and the edge demarcates and the value of the capable m of lower boundary between the two, confirm left margin row p that the zone outside said liquid crystal panel visible area fringe region and the edge demarcates and the value of right margin row q between the two according to said liquid crystal panel visible area; Wherein, N, m, p and q all are natural numbers, and n is less than m, and p is less than q;
Judging unit is used for judging that the pairing liquid crystal panel visible area of the display drive signals i that pixel is expert at of said load module input and row j belong to said fringe region or belong to the zone outside the edge, and wherein, i and j all are natural numbers;
Division unit; Be used for capable i in said pixel greater than said coboundary row n and less than the capable m of said lower boundary; And the row j of said pixel is during greater than left margin row p and less than right margin row q, and the pixel of the capable j row of then said i belongs to the zone outside the said liquid crystal panel visible area edge, otherwise; The pixel of the capable j row of said i belongs to said liquid crystal panel visible area fringe region; Return judging unit, confirm that successively each pixel belongs to said fringe region or belongs to the zone outside the edge in the said liquid crystal panel visible area, and export results to the signal compensation module.
In sum; The present invention is before the output display drive signals; Display drive signals to each pixel in the zone outside visible area fringe region or the visible area edge carries out signal compensation, then output through the display drive signals of each pixel of correspondence of compensation and not compensated to respective pixel, because carried out signal compensation; Can improve the whole optics uniformity coefficient of liquid crystal panel visible area, reach the purpose of the image quality improving uniformity of liquid crystal panel.
The above is merely embodiments of the invention; Be not so limit claim of the present invention; Every equivalent structure or equivalent flow process conversion that utilizes instructions of the present invention and accompanying drawing content to be done; Or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present invention.
Claims (6)
1. the method for signal compensation in the liquid crystal panel visible area is characterized in that, comprising:
Import the display drive signals of corresponding each pixel of liquid crystal panel visible area;
For the display drive signals of each pixel of the said liquid crystal panel visible area of correspondence fringe region carries out signal compensation; The display drive signals that perhaps is each pixel in the zone outside the corresponding said liquid crystal panel visible area edge carries out signal compensation, so that realize consistent between the image quality in the image quality of liquid crystal panel visible area fringe region and the zone outside the edge;
Export said display drive signals through compensation and each pixel of correspondence of not compensated to respective pixel.
2. method according to claim 1; It is characterized in that; The display drive signals of said each pixel for corresponding liquid crystal panel visible area fringe region carries out signal compensation, perhaps carries out comprising before the step of signal compensation for the display drive signals of each pixel in the zone outside the corresponding said liquid crystal panel visible area edge:
Image quality distribution situation according to said liquid crystal panel visible area; Confirm coboundary row n that the zone outside said liquid crystal panel visible area fringe region and the edge demarcates and the value of the capable m of lower boundary between the two; Confirm left margin row p that the zone outside said liquid crystal panel visible area fringe region and the edge demarcates and the value of right margin row q between the two, wherein, n, m, p and q all are natural numbers; And n is less than m, and p is less than q;
Judgement need to display drive signals carry out signal compensation its place of pixel capable i with row j belong to said fringe region or belong to the zone outside the edge, wherein, i and j all are natural numbers;
If said i is greater than said coboundary row n and less than the capable m of said lower boundary; And said j is greater than left margin row p and less than right margin row q; Then saidly need belong to the zone outside the said liquid crystal panel visible area edge to the pixel that display drive signals carries out signal compensation; Otherwise; Said need to display drive signals carry out signal compensation pixel belong to said liquid crystal panel visible area fringe region, constantly circulate according to the step of said judgement, confirm that successively each pixel belongs to said fringe region or belongs to the zone outside the edge in the said liquid crystal panel visible area.
3. the input data converting circuit in the liquid crystal panel is characterized in that, comprising:
Load module is used to import the display drive signals of corresponding each pixel of liquid crystal panel visible area;
The signal compensation module; The display drive signals that is used to each pixel of corresponding said liquid crystal panel visible area fringe region carries out signal compensation; The display drive signals that perhaps is each pixel in the zone outside the corresponding said liquid crystal panel visible area edge carries out signal compensation, so that realize consistent between the image quality in the image quality of liquid crystal panel visible area fringe region and the zone outside the edge;
Output module, the display drive signals that is used for exporting said each pixel of correspondence through compensation and not compensated is to respective pixel.
4. circuit according to claim 3 is characterized in that, said input data converting circuit also comprises judge module, and said judge module comprises:
Confirm the unit; Be used for image quality distribution situation, confirm coboundary row n that the zone outside said liquid crystal panel visible area fringe region and the edge demarcates and the value of the capable m of lower boundary between the two, confirm left margin row p that the zone outside said liquid crystal panel visible area fringe region and the edge demarcates and the value of right margin row q between the two according to said liquid crystal panel visible area; Wherein, N, m, p and q all are natural numbers, and n is less than m, and p is less than q;
Judging unit is used to judge and need the capable i that display drive signals carries out its place of pixel of signal compensation be belonged to said fringe region or belong to the zone outside the edge with row j that wherein, i and j all are natural numbers;
Division unit; Be used at said i greater than said coboundary row n and less than the capable m of said lower boundary; And said j is during greater than left margin row p and less than right margin row q, then said need to display drive signals carry out signal compensation pixel belong to the zone outside the said liquid crystal panel visible area edge, otherwise; Said need to display drive signals carry out signal compensation pixel belong to said liquid crystal panel visible area fringe region; Return judging unit, confirm that successively each pixel belongs to said fringe region or belongs to the zone outside the edge in the said liquid crystal panel visible area, and export results to the signal compensation module.
5. a liquid crystal indicator is characterized in that,
Said liquid crystal indicator comprises:
Input data converting circuit, data drive control circuit, output data formating circuit, liquid crystal polarity control circuit, turntable driving control circuit and synchronizing circuit; Said synchronizing circuit is electrically connected to data drive control circuit and liquid crystal polarity control circuit, and said data drive control circuit is electrically connected to the output data formating circuit;
Said input data converting circuit comprises:
Load module is used to import the display drive signals of corresponding each pixel of liquid crystal panel visible area;
The signal compensation module; The display drive signals that is used to each pixel of corresponding said liquid crystal panel visible area fringe region carries out signal compensation; The display drive signals that perhaps is each pixel in the zone outside the corresponding said liquid crystal panel visible area edge carries out signal compensation, so that realize consistent between the image quality in the image quality of liquid crystal panel visible area fringe region and the zone outside the edge;
Output module is used to export display drive signals to the data drive control circuit and the liquid crystal polarity control circuit of said each pixel of correspondence through compensation and not compensated.
6. device according to claim 5 is characterized in that, said input data converting circuit also comprises judge module, and said judge module comprises:
Confirm the unit; Be used for image quality distribution situation, confirm coboundary row n that the zone outside said liquid crystal panel visible area fringe region and the edge demarcates and the value of the capable m of lower boundary between the two, confirm left margin row p that the zone outside said liquid crystal panel visible area fringe region and the edge demarcates and the value of right margin row q between the two according to said liquid crystal panel visible area; Wherein, N, m, p and q all are natural numbers, and n is less than m, and p is less than q;
Judging unit is used for judging that the pairing liquid crystal panel visible area of the display drive signals i that pixel is expert at of said load module input and row j belong to said fringe region or belong to the zone outside the edge, and wherein, i and j all are natural numbers;
Division unit; Be used for capable i in said pixel greater than said coboundary row n and less than the capable m of said lower boundary; And the row j of said pixel is during greater than left margin row p and less than right margin row q, and the pixel of the capable j row of then said i belongs to the zone outside the said liquid crystal panel visible area edge, otherwise; The pixel of the capable j row of said i belongs to said liquid crystal panel visible area fringe region; Return judging unit, confirm that successively each pixel belongs to said fringe region or belongs to the zone outside the edge in the said liquid crystal panel visible area, and export results to the signal compensation module.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210183068.9A CN102682732B (en) | 2012-06-05 | 2012-06-05 | Signal compensation method, switching circuit and liquid crystal display device in liquid crystal panel |
| US13/574,612 US20130321497A1 (en) | 2012-06-05 | 2012-06-12 | Method of Signal Compensation, Transformation Circuit in Liquid Crystal Panel, and Liquid Crystal Display Device |
| DE112012006362.7T DE112012006362B4 (en) | 2012-06-05 | 2012-06-12 | Signal compensation method, input data transformation circuit and liquid crystal display device |
| PCT/CN2012/076745 WO2013181856A1 (en) | 2012-06-05 | 2012-06-12 | Method for signal compensation in liquid crystal panel, conversion circuit, and liquid crystal display device |
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| CN201210183068.9A CN102682732B (en) | 2012-06-05 | 2012-06-05 | Signal compensation method, switching circuit and liquid crystal display device in liquid crystal panel |
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| CN102682732A true CN102682732A (en) | 2012-09-19 |
| CN102682732B CN102682732B (en) | 2014-04-02 |
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| CN (1) | CN102682732B (en) |
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Also Published As
| Publication number | Publication date |
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| WO2013181856A1 (en) | 2013-12-12 |
| DE112012006362T5 (en) | 2015-01-29 |
| CN102682732B (en) | 2014-04-02 |
| DE112012006362B4 (en) | 2024-01-04 |
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